-¿Para qué hostias lo has invitado si sabes que me cae fatal? — What the hell did you invite him for if you know I can't stand him?

4)De la hostia, normally modifying a noun, means 'muy bueno', 'muy fuerte' or 'muy intenso'; the use of hostia can usually alternatewith leche.3

-Es un acto de amor de la hostia / leche — It's one hell of an act of love

-Me hicieron una oferta de la hostia / leche — I've been made a hell of an offer

-Tenemos una tradición musical de la hostia / leche — We have one hell of a musical tradition

5) Ni (qué) hostias / ni leches/ ni pollas / ni niño muerto. This construction is used to show rejection or denial of an idea, similar in meaning to 'ni nada por el estilo', but with an added feeling of resentment, ridicule or anger - read more.